I have an 89 Bronco II that idles rough and has a loss of power when the weather gets colder and the moisture hits, live in the Northwest with a lot of rain. The last two springs I had the fuel injectors cleaned and the truck runs like new until the weather gets cold again. I've had the spark plugs and wires along with the fuel filter replaced over the last couple years also. Only getting the fuel injectors cleaned seems to solve the problem at least until the cold weather hits again. Any suggestions as to what the problem could be to totally eliminate this would be appreciated. I don't want to pour money into the truck but I am will to get it running well in order to make it last.
Thanks in advance,